Furnace



Fb. 26, 1935. E, BAlLEY 1,992,459

FURNAC E Original Filed March 20, 1925 I5 Sheets-Sheet 1 ATTORNEY E. e. BAILEY Feb. 26, 1935.

FURNACE I5 Sheeis-Sheec 2 Original Filed March 20 1925 2! INVENTOR v YErvm GBaz/ey, 'MTTORNEYS. f

Feb. 26, 1935. E. G. BAILEY 1,992,459

' FURNACE I Original Filed March 20, 1925 5 Sheets-Sheet 3 ,1! mm 1 Mam 3 0: o 1' l 1% I INVENTOR Ervjn G Ba if y ATTORNEYS theme Feb. 26, 1935 UNITED STATES PATENT OFFICE} FURNACE Ervin G. Bailey, Easton, Pa., assignor to Fuller Lehigh Company, New York, N. Y., a corporation of Delaware Original application Mai-011120, 1925, Serial No. 17,054. Divided and this application, October 19, 1932, Serial No. 638,439

'12 Claims. (01. 122-6) vention and in which:

Fig. 1 is a vertical view, partly in elevation and partly in section, showing" one location where the invention may be practiced.

Fig. 2 is a view similar to Fig. 1, but taken at right angles thereto.

Fig. 3 is a horizontal section througha corner of the combustion chamber shown in Figs. 1 and 2, and taken approximately on the line 33 of Fig. 4.

Fig. 4 is a view taken approximately on the line 4- -4 of Fig. 3.

Fig. 5 is a detail showing in elevation a portion of the face or front of one of the walls approximately on the line 5-5 of Fig. 3.

Fig. 6 is a fragmentary view on an enlarged scale, showing some of the structure appearing in Fig. 3.

Referring first to Figs. 1 and 2, I have shown therein a boiler which may be of any suitable construction and only a portion of which appears in these figures. Theparticular type of boiler 301 selected for illustration is of the well-known Stirling type embodying a lower drum 1 and upper steam and water drums 2, 3,- and 4 connected by banks of vertically extending tubes, some of which are indicated at 5. Since the particular type of boiler used is not of importance in connectionwith this invention, no further details thereof will be given.

Beneath the boiler is disposed a furnace having a combustion chamber 6 in which fuel may be burned. The fuel is here shown as being introduced by a pulverized fuel burner '7. The

chamber is indicated as having an inclined floor I 8 and vertical walls, including a front wall 9, a rear wall 10, and side walls 11. The chamber is also shown as provided with an arch 12 adjacent the front thereof and formed in part of tubes 13 connected to the drum 1 and also to a horizontally extending water drum 14, which is likewise connected to the drum 1 by. tubes 15 to form a circulating system including the tubes 13.

After the products of combustion leave the combustion chamber 6, they rise into the space 16,

. at the rear of which is a wall 1'7 formed in part of tubes 18 connected to the upper drum 4'and also to a horizontally extending drum 19.- Ifhe to a novel and improved front and rear walls of the combustion chamber are shown as formed in part of vertically extending tubes. The front wall 9 comprises tubes 20 connected at their upper ends to the drum 14 and disposed in a row. The lower ends of these tubes are connected to a water chamber or ,header 21. v

Similarly, the rear wall vertically extending tubes 22 connected at their upper ends to the drum 19 and at their lower ends to aheader 23. t The fioor 8 is shown as formed of army of tubes 24 connected at opposite ends to headers Hand 23. Normally, the water from the drum 14 will circulate through the tubes 20, header 21, tubes 24, header 23, tubes 22, drum 19, and tubes 18, and thence through the boiler, back to the drum 14.

The side walls 11 are shown as formed of horizontally inclined tubes 25 connected at their opposite ends to headers 26 and 2'7 which, it will be seen, are disposed beyond the corners of the chamber 6 and are connected at their upper ends to drums 14 and 19, respectively. By this arrangement, there is also provided a circulation from the drum 14 through the headers 26, tubes 25, and headers 27, to the drum 19, and thence through the boiler, back to the drum 14. I

Preferably, the walls and floor of the combustion chamber are formed of tile or blocks secured to the tubesindependently of each other, in a manner more fully described in the parent application, Serial No. 17,054, and in my Patent No.

1,719,642. The tile may be either of the all metal-,

lie type or of the composite type shown in Figs. 3, 5, and 6, but at the corners .of the combustion chamberit is desirable to use a special construction whichv will now be more fully pointed out. In any case, the tile constitutes a refractory covering for the tubes in the walls, and the faces of the tile or blocks-form the inner faces of the walls.

The regular tile indicated at 28 in Figs. 3 and 5 may be of the form shown in my patent. These close the spaces between adjacent tubes, being secured in intimate thermal contact with said tubes by means of clamping members 29 secured to the tile by bolts 30, a suitable cement 31 being placed between the tubes on one hand, and the tile and clamping members on the other hand.

In this arrangement, each tile 28 is fastened in place and supported by the two adjacent tubes,

the space between these tubes being closed by comprises a row of I tubes extend beyond the corner 32 of the combustion chamber formed by the inner faces of the two walls, the particular header to which these tubes are joined being located beyond that same corner, The tubes 25 are provided with tile 28, the last tile being so disposed that it extends beyond the face of the tile supported by the tubes 22, and in this instance beyond the plane 33 which passes through the axes of these tubes. The tubes 22 are provided adjacent the corner 32 with special""tile 34, the edges 35 of which substantially contact with the faces of the tile 28 on the tubes 25, forming the inner face of the wall 11. Suitable caulking may be used at the corner 32, as indicated at 36, but at the same time I it will be seen that by the above arrangement plane likewise normal to the the walls are free to move relatively to each other, as the rows of tubes in adjacent walls are supported by different headers. It will also be seen that the-circulation of water through one row of tubes is independent of that through the other, so far as the walls are concerned.

Each tile 34, as stated above, has one edge 35 in contact with the tile on the adjacent wall on the opposite side of the corner 32, The opposite edge 37 of the same tile is, howeverydisposed substantially on the plane 38, which may be defined as a plane passing through the axis of the second tube 22 from the corner and substantially normal to the plane 33 passing through the axes of the tubes. This tile 34 is held in place by means of clamping members 29' closely similar to the other clamping members 29 and engaging the walls of adjacent tubes. It will be seen, however, that the tile 34 completely covers the front of the tube 22 which is nearest the corner 32, and also closes the space between that tube and the corner. A clamping member 39 may be used to hold this last-named portion of the tile 34 against the adjacent tube 22 by bolts 40.

While I have shown the invention as embodied in a specific form, it is to be understood that various changes in details may be made without departing from the scope of the invention, and I therefore do not intend to limit myself except by the appended claims.

I claim:

1. In a furnace wall, two spaced cooling tubes having their axes disposed substantially in a common plane, a tile closing the space between said tubes and having one edge disposed in a plane passing substantially through the axis of one of said tubes normal to said first-named plane, the other edge' of said tile being disposed in a third first-named plane and on the side of the other tube remote from the first-named tube, means between said tubes to clamp the tile thereto, and other clamping means on said remote side of said other tube.

2. A furnace combustion chamber having two walls with the inner faces thereof meeting at a comer, each of said walls comprising a row of water cooled tubes and refractory material sup ported on the side of the row nearest the interior of the chamber, the refractory material on one of said walls having a substantially smooth surface forming the inner face of that wall and extending outwardly beyond said corner, the other of said walls having one of said tubes thereof disposed adjacent said corner and supporting the refractory material of that wall adjacent said corner, the refractory material of said other wall being independent of the refractory material of 3. A furnace combustion chamber having two walls with the inner faces thereof meeting at a corner, each of said walls comprising a row of water cooled tubes and refractory material supported on the side of the row nearest the interior of the chamber, the refractory material on one of said wall s having a substantially smooth surface forming the inner face of that wall and extending'outwardly beyond said corner, the other of said walls having one of said tubes thereof disposed adjacent said corner and supporting the refractory material of that wall adjacent said corner, the refractory material of said other wall being independent of the refractory material of the first-named wall and contacting with said smooth surface thereof, and means supporting each of said rows of tubes independently of the other.

4. A furnace combustion chamber having two walls with the inner faces thereof meeting at a' corner, each of said walls comprising a row of water cooled tubes and refractory material supported on the side of the row nearest the interior of the chamber, the'refractory material on at least one of said walls comprising tile removably supported on the tubes and having the inner faces thereof forming a smooth surface comprising the inner face of that wall and extending outwardly beyond said corner, the other of said walls having one of said tubes thereof disposed adjacent said corner and supporting therefractory material of that wall adjacent said corner, the refractory material of said other wall being independent of therefractory material of the first-named wall and contacting with said smooth surface thereof.

5. A furnace combustion chamber having two walls with the inner faces thereof meeting at a corner, each of said walls comprising a row of water cooled tubes and refractory material supported on the side of the row nearest the interior of the chamber, the refractory material on one of said walls having a substantially smooth surface forming the inner face of that wall and extending outwardly beyond said corner, the other of said walls having the refractory material thereof in the form of tile removably secured to said tubes and having the inner faces thereof forming the inner face of that wall, one of said tubes in said other wall being adjacent said corner and supporting tile thereon with its edges in contact with said smooth surface of the first-named wall but independent thereof.

6. A furnace combustion chamber having two walls with the inner faces thereof meeting at a corner, each of said walls comprising a row of water cooled tubes and tile supported on the side of the row nearest the interior of the chamber, the inner faces of said tile comprising said inner faces of the walls, the inner face of one of said walls extending outwardly beyond said corner, and the edges of the tile on the other of said walls abutting against said face of the firstnamed wall but independent thereof.

7. A furnace combustion chamber comprising two walls meeting at a corner, each of said walls comprising a row of water cooled tubes and tile supported thereby and closing the spaces therebetween, the tile in one of said walls each extending substantially from the center line of one tube to the center line of the adjacent tube in the row, and the space between the last two tubes in the row adjacent the corner being closed by a tile having an extension thereon beyond the last tube in the row and extending to said 8. A furnace combustion chamber having two walls with the inner faces thereof meeting at a corner, each of said walls comprising a row of water cooled tubes and tile supported on the side of the row nearest the interior of the chamber, the inner faces of said tile comprising said inner faces of the walls, theinner face of one of said walls extending outwardly beyond said corner, the other of said walls having a tube disposed adjacent said corner, and a tile supported at least in part by said tube and extending in front thereof and having an edge contacting with the inner face of the first-named wall at said corner.

9. A furnace combustion chamber having two walls with the inner faces thereof meeting at a comer, each of said walls comprising a row of water cooled tubes and tile supported on the side of the row nearest the interior of the chamber, the inner faces of said tile comprising said inner faces of the walls, the inner face of one of said walls extending outwardly beyond said corner, the other of said walls having two tubes adjacent said corner supporting a tile closingthe space therebetween and having one edge disposed in a plane passing through the axis of the second tube from the corner, said tile extending in front of the tube next to the corner and having the other edge thereof disposed adjacent said corner and in contact with the inner face of the firstnamed wall, and means coacting with said tubes to clamp said tile thereto. a

10. A furnace combustion chamber having two walls with the inner faces. thereof meeting at a corner, each of said walls comprising a row of water-cooled tubes and refractory material supported thereby and each wall having a tube thereof disposed adjacent said comer to cool and to support the refractory material adjacent the corner, one of said walls having a substantially smooth surface forming the irmer face of that wall at the corner and extending outwardly beyond said corner, the other of said walls having an edge portion contacting with said smooth surface of the first-named wall, the row of tubes in each wall supporting the refractory material of that wall independently of the refractory material in the wall on the other side of the corner.

11. A furnace'combustion chamber having two walls with the inner faces thereof meeting at a corner, each of said walls comprising a row of water cooled tubes and refractory material supported thereby and each walk-having a tube thereof disposed adjacent said comer to cool and to support the refractory material adjacent the corner, the refractory material on one of said rows facing the interior of the chamber and having a substantially smooth surface forming the inner face of that wall at the comer and extending outwardly beyond said corner, the other of said walls having one of its tubes which is disposed adjacent said corner supporting the refractory material of its wall adjacent said corner independently of the refractory material of said first-named wall, said other wall having an edge portion contacting with said smooth surface on the refractory material of the first-named wall.

12. A furnace combustion chamber having two walls with the inner faces thereof meeting at a corner, each of said walls comprising a row of water cooled tubes and refractory material supported thereby; the refractory material on one of said rows being disposed on the side of the row nearest the interior of the chamber and having a substantially smooth surface formingthe inner face of that wall at the corner and extending outwardly beyond said corner, the other of said walls having one of said tubes thereof disposed adjacent said corner and supporting the refractory material of its wall adjacent said corner independently of the refractory material of said first-named wall, said other wall having an edge portion contacting with said smooth surface on the refractory material of the first-named wall.

ERVIN G. BAILEY. 

